Lighting device for motor vehicles

  • US 6,347,880 B1
  • Filed: 09/25/2000
  • Issued: 02/19/2002
  • Est. Priority Date: 02/13/1998
  • Status: Expired due to Term
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First Claim
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1. An interior lighting system suitable for use in a motor vehicle, the system comprising:

  • a lighting assembly adapted for mounting within the interior of the vehicle, said lighting assembly including at least one white light emitting diode;

    electrical circuitry for supplying electrical power to said at least one white light emitting diode;

    wherein said at least one white light emitting diode individually emits substantially white light when said at least one white light emitting diode is powered by said electrical circuitry; and

    wherein said electrical circuitry comprises at least one of;

    a) a non-linear resistance network connected with said at least one white light emitting diode;

    b) a pulse width modulation circuit connected with said at least one white light emitting diode; and

    c) a protective diode connected with said at least one white light emitting diode.

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